#include<stdio.h>

int main()
{
    int n, u, d;
    int min = 0;
    int height = 0;
    scanf("%d %d %d", &n, &u, &d);
    for(min = 1; ; min++)
    {
        if(min % 2 == 0)
        {
            height -= d;
        }
        else
        {
            height += u;
        }
        if(height >= n)break;
    }
    printf("%d", min);

    return 0;
}